[Bug 27028] Touchpad mouse cursor flickers when moved, jumps back towards original position when released

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=27028

--- Comment #48 from Vitaliy Margolen <vitaliy-bugzilla at kievinfo.com> 2011-12-06 19:28:42 CST ---
BTW the fix is wrong. Wine ends up sending two events down the chain, including
to dinput. One with data from xi2 another from motion notify. The only reason
it some how works in dinput, is one gets turned into 0 delta because of
desynchronization between real CursorPos and what's reported by wineserver.

Sometimes they cancel each-other, because of delayed cursor position upgrades
(those TickCount() > last_updated stuff). Which on it's own is completely wrong
as well, and result in wild mouse jumps. Which is _the_ real problem here, due
to big time gaps between touch pad position changes.

The proper way to fix this would be correctly fixing reported position from
GetCursorPos().

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